Lamp holder



7 9 L U E N M .O R w 2 0. m mm D E R V M mm 2 L awn Y mmm 5 mm Emm Jan. 17, 1950 Patented Jan. 17, 1950 HOLDER Eawaran. Noel, Cleveland HeightS Ohio, assig nor.

to General Electric Company; a-corporation oft N ew York Originalapplication-Npril 2'7, 1944*, Serial: No. 532,938u Diyided and thisirapplicaition May 11",,

1946,, Serial No: 6691144 3"Claims.

1;; My invention relates to; lamp holders fora plurality of flash lamps. This application, is a division ofthe copen'dingj application Serial) No.

and myself;

An object" of my" invention is to provide a lamp holder useful in the multiple flash device disclosed in the copending application referred to above. Anotherobject of my invention" is to provide a lamp holdenhaving sockets for radial:- ly supporting a; plurality'of flash lampsin at common plane holder is provided with? electriccontacts disposed" on" opposite sidesof" In the drawing accompanying and forming part of this'specification an embodiment of invention is shown inwhich Fig. lisa sideelvational view ofa lamp holder embodying'my' invention and a turrefisupporting the holder; and" afragmentary; partly-sectional view of the reflector andth-e supportmember of the multiple flash lampdeviceof the aforesaid copending"an shown in Fig. 1; Fig.3. is an enlarged, partly sec tional viewof asocket part of the lamp holder and Fig. 4 is an enlarged, fragmentary, perspective view of the lamp base end of a flash lamp insertable in the socket .of iFig; 3;

Referring to the drawings the lamprholder I is shown mounted onaLturretiZ w h-ichiswmounted so as to slide along a support 3'to which is fas- '2 5 to move the lamp replacement into i the reflctor and into position to be flashed;

A pair of contacts 'l and' 8" for engaging con tacts on the holder l' and supplying current to: flash thelampsB-ismountedon the annular part 9 of. the-bracket arm-4=supporting the reflector 5 and 'inopposing positions with respect; to the: reflector openingi The upper contact 1 is secured directly to the said: annular part While 19 the lower contact 8 is: electrically insulated therefrom; The lower contact 8: may be connected by an: insulated lead- ID: to one terminal of an electric batterwcontai-ned in a battery case: (not shown) fastened to the support 3.

ni -The uppercontact' rl. may be connected to the other :terminal of the: batteryvthroughl the metal parts" of the device: and: the battery caseasdescribedvin thee;copendingrapplication. A con-- ventional manually or automatically controlled n switch may berusedwfor controlling ignition of the lamp fi iIlIhBLiidfiGQllOl':5*S0that theflash of the lamp may; be synchronized with the openingof thezcamera shutter;

Thelampholder l compriseswfourlamp ac- ZQIOOX'IIIIIOdfltingSOCkGts l31facing in four different directions asishown in Fig. 2. Each of the sockets: I 3 accommodatesla lamp base M of the type, shownnin Fig. 4 and, Whichis disclosed in the Fultonand Footesapplication, Serial No. 461,578 3o2lfiled0ctober 10, 1942; which issued July 22, 1947,

asPatent $424,446 and is assigned to. the assignee of this application. The lamp base [4 is cup-shaped and has a cylindrical rim IS, a disc-likeweb-l6 and apair of contacts I! and I8 35:1; on the web. [6, The contacts I! and I81 are eccentrically mountedon the web with the contact I8'more eccentric than contact IT. The socket I3Icomprises a plurality of annularly arranged'spring fingers, ZB" the free ends of which tened a bracket arm 4 supporting the reflector 19161111 Over edge or rim of cylindrical part 5. The reflector 5--isconcave'and'may be-parabolic and has an openingat its" vertex through which a flash lamp 6- moun-tedinthe holder- I may be moved into-and out of the reflector 51 The holder Ms mountedso as to revolve with the turret 2 and is adaptedtosupport four lamps- 6 disposed 90 apart. The lamps 6 in the holder I may be inserted successively into the reflector 5 by sliding the turret 2 along the support 3 and away from the reflector to withdraw a lamp 6 completely from the reflector, turning the turret 90 to bring another lamp into position to pass through the reflector opening and of base l4 whenthelatter is pushed into the s0cket'l3' to hold, thebase contacts I1 and I8 firmly'against socket contacts 21 and 22, re-

one end portion of which is bent over and bolted to an elongated insulating support member 24. The socket contact 22 is a helically coiled wire 50 having a circular, free end and which is secured at its opposite end to the bottom of the spring fingers 20 which form a continuous cup-shaped surface which, in turn, is secured to an electrical conductor 25. One end portion of consliding the turret 2 back toward the reflector s5 ductor 25 is bent over the other end of support 3 24 Contact 2l is spaced from the other electrically conducting parts of the socket l3 except conductor 23. Conductor is spaced from con ductor 23 to prevent short circuits between these elements. When the sockets l3 are mounted in the holder l the bent-over portions of conductors 23 and 25 are exposed and constitute contacts for engagement with the circuit contacts 1 and 8 on reflector bracket 9 as shown in Fig. 1.

The holder 1 has an aperture or passage 28 therethrough (Fig. 2) for accommodating the spindle 29 of the turret 2 and cavities 30 for accommodating part of pin 3| on the turret. Pin 32 on disc 33 of the turret may be used to turn the disc 33 and the holder l in replacing a flashed lamp 6. The holder I is hollow and is separable into two electrically insulating parts along the line 34 of Fig. 1 which parts are held together by removable bolts 35 (Fig. 2). The conductors 23 and 25 and the ends of member 24 pass through slots 36 in each part of holder l. The mid-portion of member 24 is of greater width than the end portions thereof in slots 36 so that shoulders 31 are formed where the width of member 24 changes. The shoulders 31 abut against the inner surface of the hollow holder l to hold the socket l3 in proper position in said holder.

It will be understood that the lamp holder may be used with other types of multiple flash apparatus. For example, the lamp holder may, with slight modification, be used in apparatus similar to that disclosed in the John J. Malloy application Serial No. 508,480, filed November 1, 1943, now Patent 2,408,469, issued October 1, 1946, and as signed to the assignee of this application. In the aforesaid Malloy application the reflector is moved out of the path of the lamps when the lamp holder is rotated.

The lamps 6 are of the type disclosed in the Fulton and Foote application identified above and comprise beads of combustible material, such as those disclosed and claimed in the Pipkin Patent #2,291,983, issued August 4, 1942, supported in the bulb by a pair of current inleads which are bridged by an incandescible filament in contact with the said beads to ignite the latter. The lamps 6 are filled with a combustion supporting .atmosphere, such as oxygen or air, at atmospheric pressure or lower and, when ignited, emit actinic radiation useful in taking photographs.

What I claim as new and desire to secure by Letters Patent of the United States is:

1. A lamp holder comprising an electrically insulating support block having a recess in one of its faces and a pair of internal passages extending from and transversely to the recess to the outside of the block, a socket for a lamp base mounted in the recess, a strip of insulating material extending transversely through said recess 50 and along said passages and spaced electrical conductors attached to said strip and to said socket for holding said socket in said recess and extending from said socket through said passages to the outside of said block for engaging the terminals of a power source for the lamp, Said block being separable longitudinally of the recess and transversely of the passages for insertion and re--- moval of the socket.

2. A lamp holder comprising an electrically insulating support having a recess and a pair of passages extending transversely to and in opposite directions irom the recess to the outside of the support and a socket assembly mounted in said recess and said passages and comprising a strip of insulating material extending along both of said passages and across the inner portion of said recess, elongated electrical conductors mounted in spaced relation on opposite sides of said strip and extending in opposite directions from said recess with their outer end portions bent over and fastened to the ends of said strip and exposed outside said support for engaging circuit contacts, electrical contacts mounted on the inner portions of said conductors and extendmg into said recess and a socket member also. mounted on one of said conductors and supported thereby around said contacts in said recess and having spring fingers for receiving and gripping a lamp base to hold said base against said contacts.

3. A lamp holder comprising an electrically insulating support having a recess and a pair of passages extending transversely to and in opposite directions from the recess to the outside of the support and a socket assembly mounted in said recess and said passages and comprising a strip of insulating material extending along both ofsaid passages and across the inner portion of said recess, elongated electrical conductors mounted in spaced relation on opposite sides of said strip and extending in opposite directions from said recess with their outer end portions bent over and fastened to the ends of said strip and exposed outside said support for engaging circuit contacts, electrical contacts mounted on the inner portions of said conductors and extending into said recess and a socket member also mounted on one of said conductors and supported thereby around said contacts in said recess and having spring fingers for receiving and gripping a lamp base to hold said base against said contacts, said support being separable 1on gitudinally of said recess and transversely of said passages for insertion and removal of said socket assembly.

EDWARD B. NOEL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 502,655 Bryant Aug. 1, 1893 1,351,203 Cole Aug. 31, 1920 1,442,013 Thomas Jan. 9, 1923 2,032,515 Troup Mar. 3, 1936 2,123,435 Peill et a1 July 12, 1938 2,292,242 Sagona Aug. 4, 1942 

